Messages in this thread Patch in this message | | | Date | Tue, 28 Jul 2009 15:58:51 -0700 | From | Greg KH <> | Subject | [patch 23/37] SUNRPC: Dont disconnect if a connection is still in progress. |
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2.6.27-stable review patch. If anyone has any objections, please let us know.
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From: Trond Myklebust <Trond.Myklebust@netapp.com>
commit 40d2549db5f515e415894def98b49db7d4c56714 upstream.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- net/sunrpc/xprtsock.c | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-)
--- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -1560,10 +1560,9 @@ out: * We need to preserve the port number so the reply cache on the server can * find our cached RPC replies when we get around to reconnecting. */ -static void xs_tcp_reuse_connection(struct rpc_xprt *xprt) +static void xs_abort_connection(struct rpc_xprt *xprt, struct sock_xprt *transport) { int result; - struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt); struct sockaddr any; dprintk("RPC: disconnecting xprt %p to reuse port\n", xprt); @@ -1580,6 +1579,17 @@ static void xs_tcp_reuse_connection(stru result); } +static void xs_tcp_reuse_connection(struct rpc_xprt *xprt, struct sock_xprt *transport) +{ + unsigned int state = transport->inet->sk_state; + + if (state == TCP_CLOSE && transport->sock->state == SS_UNCONNECTED) + return; + if ((1 << state) & (TCPF_ESTABLISHED|TCPF_SYN_SENT)) + return; + xs_abort_connection(xprt, transport); +} + static int xs_tcp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock) { struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt); @@ -1650,7 +1660,7 @@ static void xs_tcp_connect_worker4(struc } } else /* "close" the socket, preserving the local port */ - xs_tcp_reuse_connection(xprt); + xs_tcp_reuse_connection(xprt, transport); dprintk("RPC: worker connecting xprt %p to address: %s\n", xprt, xprt->address_strings[RPC_DISPLAY_ALL]); @@ -1710,7 +1720,7 @@ static void xs_tcp_connect_worker6(struc } } else /* "close" the socket, preserving the local port */ - xs_tcp_reuse_connection(xprt); + xs_tcp_reuse_connection(xprt, transport); dprintk("RPC: worker connecting xprt %p to address: %s\n", xprt, xprt->address_strings[RPC_DISPLAY_ALL]);
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